To check tire tread depth, there are several simple methods:
- Coin Test:
- Use a quarter or penny as a quick gauge.
- For a quarter test, insert a quarter into the tire tread with Washington's head facing down. If the tread touches the top of Washington's head, the tires have at least 4/32" tread left and are generally safe.
- For a penny test, insert a penny with Lincoln's head upside down into the tread. If you can see all of Lincoln's head, the tread depth is less than 2/32", meaning the tires are worn out and should be replaced.
- Tire Tread Depth Gauge:
- A dedicated tool that measures tread depth precisely.
- Insert the gauge pin into the tread groove until the base is flush with the tire.
- Read the measurement to determine if the tread is sufficient or if replacement is needed (typically below 4/32" for winter tires and below 2/32" for summer tires is unsafe).
- Tread Wear Indicator Bars:
- Most tires have built-in indicators raised within the tread grooves.
- When these bars become flush with the tire tread surface, it signifies the tire has reached the minimum legal tread depth (usually 2/32") and needs replacement.
Regular tread checks can help prevent risks such as hydroplaning and reduced traction. It's good practice to check the tread in multiple spots around each tire to assess uneven wear.
This is how to ensure your tires have adequate tread for safe driving.
